Bridge Unicast Unknown - Cisco 300 Series Cli Manual

Address Table Commands
OL-32830-01 Command Line Interface Reference Guide
Default Configuration
Ports are not forbidden to dynamically join Multicast groups.
The default option is add.
Command Mode
Interface (VLAN) Configuration mode
User Guidelines
Use this command to forbid a port to dynamically join (by IGMP, for example) a
Multicast group.
The port can still be a Multicast router port.
Example
The following example forbids forwarding of all Multicast packets to gi 1 1 within
VLAN 2.
switchxxxxxx(config)#
switchxxxxxx(config-if)#
gi11
5.17

bridge unicast unknown

To enable egress filtering of Unicast packets where the destination MAC address
is unknown to the device, use the bridge unicast unknown Interface (Ethernet, Port
Channel) Configuration mode command. To restore the default configuration, use
the no form of this command.
Syntax
bridge unicast unknown {
no bridge unicast unknown
Parameters
•
filtering—Filter unregistered Unicast packets.
•
forwarding—Forward unregistered Unicast packets.
interface vlan 2
bridge multicast forbidden forward-all add ethernet
filtering forwarding
| }
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